Bump h2 from 1.3.155 to 1.3.156 (#174)

Author: dependabot[bot]

pom.xml

@@ -62,7 +62,7 @@
           -->
         <groupId>com.h2database</groupId>
         <artifactId>h2</artifactId>
-        <version>1.3.155</version>
+        <version>1.3.156</version>
         <scope>test</scope>
       </dependency>
     </dependencies>